RIVA128 datasheet(53/77 Pages) STMICROELECTRONICS

53 / 77 page

128-BIT 3D MULTIMEDIA ACCELERATOR

RIVA 128

53/77

11.4 SERIAL INTERFACE

The RIVA 128 serial interface supports connection

to DDC1/2B, DDC2AB and DDC2B+ compliant

monitors and to serial interface controlled video

decoders and tuners. Supported video decoder

chips include Philips SAA7110, SAA7111A, ITT

3225 and Samsung KS0127. For details of ad-

dress locations and protocols applying to specific

parts refer to the appropriate manufacturer’s

datasheet.

The serial interface in RIVA 128 requires operation

under software control to provide emulation of the

interface standard. RIVA 128 can act as a master

for communication with slave devices like those

mentioned above. It also acts as a master when in-

terfacing to a DDC1/2 compatible monitor. Al-

though it is not Access.bus compatible, it can com-

municate with a DDC2AB compatible monitor via

the DDC2B+ protocol. (No other Access.bus pe-

ripherals can be attached although other serial de-

vices may co-reside on the DDC bus). The RIVA

128 can clock stretch incoming messages in the

event that the software handler is interrupted by

another task.

RIVA128 Datasheet(PDF) 53 Page - STMicroelectronics